CN103985339A - Display panel - Google Patents
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- CN103985339A CN103985339A CN201310415243.7A CN201310415243A CN103985339A CN 103985339 A CN103985339 A CN 103985339A CN 201310415243 A CN201310415243 A CN 201310415243A CN 103985339 A CN103985339 A CN 103985339A
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- 230000004913 activation Effects 0.000 claims description 66
- 239000003990 capacitor Substances 0.000 claims description 34
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000002650 habitual effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007600 charging Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A display panel includes a gate driving circuit and a control circuit. The gate driving circuit includes a plurality of circuit stages. The Nth circuit stage of the circuit stages comprises a starting unit, a driving unit, a first pull-down unit, a second pull-down unit and a current sensing unit. The driving unit is used for providing a clock signal to the Nth stage output end. The first pull-down unit is used for enabling the enabling node to have a first pull-down voltage. The second pull-down unit is used for providing a second pull-down voltage to the de-enable node. The current sensing unit is used for detecting an error current flowing through the first pull-down unit and outputting an error signal according to the error current. The control circuit is used for adjusting the second pull-down voltage according to the error signal of the Nth stage circuit stage.
Description
[technical field]
The invention relates to a kind of electronic installation.Particularly about a kind of display panel.
[background technology]
Along with scientific and technological rapid progress, display panel has been widely used in the middle of people's life, such as mobile phone or computer etc.
Display panel can comprise gate drive circuit, data driver and a plurality of pixel of arranging with matrix.Gate drive circuit can comprise a plurality of circuit levels that are electrically connected in series each other.Gate drive circuit can sequentially be produced respectively a plurality of gate signals (scanning signal) and be offered pixel by its circuit level, with sequentially rows of/on-pixel line by line.Data driver can produce a plurality of source electrode signals (data signal), and offers the pixel of unlatching, for example, to make the pixel of unlatching upgrade its show state (color and GTG).Thus, image can upgrade and show on display panel.
Generally speaking, in gate drive circuit, each circuit level can comprise a plurality of derailing switches (being for example membrane transistor).Gate drive circuit can be by the derailing switch of sequentially opening and closing plurality of circuits level, to produce the gate signal of plurality of circuits level.Yet these derailing switches are after high-temperature operation or long-time driving, its critical voltage (threshold voltage) can produce skew, and derailing switch cannot correctly open or cut out.When specific derailing switch cannot correctly open or cut out, gate drive circuit cannot correctly be exported gate signal, and cause the unstable of display panel.
Therefore, how to design a more stable display panel, making the incorrect unlatching of the particular switch device in gate drive circuit or close to be able to be detected and correct, to make gate drive circuit can correctly export gate signal, is an important research theme of this area.
[summary of the invention]
An aspect of the present invention is a kind of display panel.
According to one embodiment of the invention, display panel comprises a gate drive circuit and a control circuit.This gate drive circuit comprises plurality of circuits level, and wherein these circuit levels are electrically connected in series each other.A N level circuit level in these circuit levels comprises and opens beginning unit, a driver element, one first drop-down unit, one second drop-down unit and a current sensing unit.This opens beginning unit, in order to receive and initial pulse signals to activation node is provided, and makes this activation node have an activation voltage.This driver element is in order to receive a clock signal, and in order to according to this activation voltage of this activation node, provides this clock signal to one N level output terminal.This first drop-down unit in order to according to one deenergize node one supply voltage, provide one first actuation voltage to this activation node, and make this activation node there is this first actuation voltage.This second drop-down unit, in order to according to this activation voltage of this activation node, provides one second actuation voltage to this node that deenergizes.This current sensing unit, in order to detecting and according to a false current that flows through this first drop-down unit, is exported a rub-out signal.This control circuit is in order to receive and to adjust this second actuation voltage according to this rub-out signal of this N level circuit level.
According to one embodiment of the invention, this current sensing unit comprises a current mirror, and this current mirror is in order to receive this false current and corresponding to this false current mirror (reflect) mirror electric current.
According to one embodiment of the invention, this current sensing unit also comprises a converter, in order to receive this mirror electric current and to export this rub-out signal corresponding to this mirror electric current.
According to one embodiment of the invention, this control circuit comprises at least one gauge tap device, this gauge tap device, in order to according to this rub-out signal of this N level circuit level, provides preparation second actuation voltage to this N level circuit level this second actuation voltage as this N level circuit level.
According to one embodiment of the invention, this N level circuit level also comprises one the 3rd drop-down unit, in order to this supply voltage of the node that deenergizes according to this, provides this first actuation voltage to this N level output terminal.
According to one embodiment of the invention, this N level circuit level also comprises one the 4th drop-down unit, in order to receive and according to this initial pulse signals, to provide this first actuation voltage to this node that deenergizes.
According to one embodiment of the invention, this pull-up unit is also in order to receive and according to this reset signal, to provide this supply voltage to this node that deenergizes.
According to one embodiment of the invention, under one first state, this activation node has this first actuation voltage.Under one second state, this opens beginning unit and receives and provide this initial pulse signals to this activation node, and makes this activation node have this activation voltage, makes this second drop-down unit provide this second actuation voltage to this node that deenergizes.Under a third state, this opens beginning unit and stops providing this initial pulse signals to this activation node.Under one the 4th state, this driver element receives and provides this clock signal to this N level output terminal.Under one the 5th state, this driver element stops receiving and provides this clock signal to this N level output terminal.
Another aspect of the present invention is another kind of display panel.
According to one embodiment of the invention, display panel comprises a gate drive circuit and a control circuit.This gate drive circuit comprises plurality of circuits level, and wherein these circuit levels are electrically connected in series each other.A N level circuit level in these circuit levels comprises on a capacitor, one first that drag switch device, opens beginning derailing switch, a driving switch device, one first pull down switch device, one second pull down switch device, a Resetting Switching device, a current mirror and a converter.This capacitor has a first end and one second end, and this of this capacitor the second end is electrically connected a N level output terminal.This on first drag switch device in order to be electrically connected between this first end and a supply voltage of this capacitor, and in order to be controlled in this supply voltage.This opens beginning derailing switch in order to be electrically connected between this first end and an initial pulse signals of this capacitor, and in order to be controlled in this initial pulse signals.This driving switch device is in order to be electrically connected between this second end and a clock signal of this capacitor, and in order to be controlled in the voltage of this first end of this capacitor.This first device that pulls down switch is electrically connected between this first end and one first actuation voltage of this capacitor, and in order to be controlled in a voltage that deenergizes node.This second device that pulls down switch is electrically connected at this and deenergizes between node and one second actuation voltage, and in order to be controlled in the voltage of this first end of this capacitor.This Resetting Switching device is electrically connected between this first end and one first actuation voltage of this capacitor, and in order to be controlled in a reset signal.This current mirror is electrically connected this first device that pulls down switch, and in order to receive, flows through this first false current that pulls down switch device, and corresponding to this false current mirror one mirror electric current.This converter is electrically connected this current mirror, in order to receive and to export a rub-out signal corresponding to this mirror electric current.This control circuit is in order to receive and to adjust this second actuation voltage according to this rub-out signal of this N level circuit level.
According to one embodiment of the invention, this control circuit comprises at least one gauge tap device, this gauge tap device, in order to according to this rub-out signal of this N level circuit level, provides preparation second actuation voltage to this N level circuit level this second actuation voltage as this N level circuit level.
In sum, by applying an above-mentioned embodiment, display panel can make a mistake in the first drop-down unit of arbitrary circuit level (be for example first device that pulls down switch open improperly) wherein, and while making false current flow through the first drop-down unit of this circuit level, the rub-out signal of exporting this circuit level by current sensing unit is to control circuit, for example, to make control circuit adjustment (reducing) the second actuation voltage.Thus, even if the first drop-down unit makes a mistake, and make false current flow through the first drop-down unit of this circuit level, gate drive circuit is still correctly operated.
Moreover, by applying above-mentioned another embodiment, display panel can pull down switch and make a mistake in first of arbitrary circuit level, and while making false current flow through first of this circuit level to pull down switch, the rub-out signal of exporting this circuit level by current mirror is to control circuit, for example, to make control circuit adjustment (reducing) the second actuation voltage.Thus, even if first pull down switch and make a mistake, and make false current flow through first of this circuit level, pull down switch, gate drive circuit is still correctly operated.
[accompanying drawing explanation]
The schematic diagram that Fig. 1 is the display panel that illustrates according to one embodiment of the invention;
The schematic diagram that Fig. 2 is the N level circuit level that illustrates according to one embodiment of the invention;
The state sequential chart that Fig. 3 is the N level circuit level that illustrates according to one embodiment of the invention; And
The schematic diagram that Fig. 4 is the control circuit that illustrates according to one embodiment of the invention.
[embodiment]
Below by with graphic and describe the spirit that clearly demonstrates this disclosure in detail, under any, in technical field, have and conventionally know that the knowledgeable is after understanding the preferred embodiment of this disclosure, when can be by the technology of this disclosure institute teaching, change and modification, it does not depart from spirit and the scope of this disclosure.
About " first ", " second " of using in the present invention ... Deng, the not special meaning of censuring order or cis-position, also non-in order to limit the present invention, it is only in order to distinguish element or the operation of describing with constructed term.
About " electric connection " used herein, can refer to that two or more elements directly make entity or in electrical contact mutually, or mutually indirectly put into effect body or in electrical contact, and " electric connection " also can refer to two or more elements mutual operation or action.
The schematic diagram that Fig. 1 is the display panel 100 that illustrates according to one embodiment of the invention.Display panel 100 can comprise gate drive circuit 110, control circuit 120, data driver (not illustrating) and a plurality of pixels (not illustrating) of arranging with matrix.Gate drive circuit 110 can be electrically connected control circuit 120, and plural column/row pixel.Gate drive circuit 110 can sequentially provide respectively complex sweep signal to this plural number column/row pixel, with sequentially rows of/on-pixel line by line.Control circuit 120 can provide voltage (being for example the second actuation voltage LVGL) to gate drive circuit 110.Data driver can produce a plurality of source electrode signals (data signal), and offers the pixel of unlatching, for example, to make the pixel of unlatching upgrade its show state (color and GTG).
Gate drive circuit 110 can comprise plurality of circuits level, be for example circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M, wherein M, N are positive integer.Gate drive circuit 110 can pass through respectively circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M output terminal, be for example output terminal G (1) ..., G (N-1), G (N), G (N+1) ..., this plural number column/row pixel sequentially provide sweep signal to this plural number column/row pixel is provided G (M).For example, in during a N-1, gate drive circuit 110 can provide by the N-1 level output terminal G (N-1) of circuit level S_N-1 sweep signal (being for example high voltage level) to N-1 column/row pixel, in during a N, gate drive circuit 110 can provide by the N level output terminal G (N) of circuit level S_N sweep signal to the N column/row pixel.
On the other hand, each circuit level S_1 of gate drive circuit 110 ..., S_N-1, S_N, S_N+1 ..., S_M more can in order to occur the particular error time-division you can well imagine for rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., ERR_M is to control circuit 120.Control circuit 120 can in order to receive and according to these circuit levels S_1 ..., S_N-1, S_N, S_N+1 ..., S_M rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., at least one in ERR_M, adjustment offer circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M voltage (being for example the second actuation voltage LVGL), and make gate drive circuit 110 recover normal operations.
For clear being easy to of narration understood, below take N level circuit level S_N as example explanation circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., the one in S_M setting.
The schematic diagram that Fig. 2 is the N level circuit level S_N that illustrates according to one embodiment of the invention.N level circuit level S_N for example can comprise charge/discharge unit 1102, pull-up unit 1104, opens beginning unit 1106, drop-down unit 1112, the drop-down unit 1110, second of driver element 1108, first, reset cell 1114 and current sensing unit 1116.
Charge/discharge unit 1102 can be electrically connected between activation node P and N level output terminal G (N).Pull-up unit 1104 can be electrically connected at supply voltage VDD and deenergize between nodes X.Open beginning unit 1106 and can be electrically connected between initial pulse signals STV and activation node P, wherein initial pulse signals STV for example can be electrically connected the output terminal (being output terminal G (N-1)) of previous stage circuit level (i.e. N-1 level circuit level S_N-1).Driver element 1108 can be electrically connected between clock signal CLK and N level output terminal G (N).The first drop-down unit 1110 can be electrically connected at and deenergize between nodes X and the first actuation voltage VGL.The second drop-down unit 1112 can be electrically connected at and deenergize between nodes X and the second actuation voltage LVGL.Reset cell 1114 can be electrically connected between activation node P and the first actuation voltage VGL.Current sensing unit 1116 can be electrically connected the first drop-down unit 1110 and control module 120.Output terminal G (N) can be electrically connected time initial pulse signals STV of one-level circuit level (i.e. N+1 level circuit level S_N+1) and the reset signal ENDV of previous stage circuit level (i.e. N-1 level circuit level S_N-1).
Pull-up unit 1104 can for example, in order to receive and to provide supply voltage VDD (being high voltage level) to the nodes X of deenergizing.
Opening beginning unit 1106 can for example, for example, in order to receive and to provide initial pulse signals STV (being high voltage level) (being the sweep signal of previous stage circuit level (i.e. N-1 level circuit level S_N-1) output) to charge/discharge unit 1102 and activation node P, to make charge/discharge unit 1102 chargings, and make activation node P there is activation voltage (being for example high voltage level).
Driver element 1108 can be in order to receive clock signal CLK, and in order to according to the activation voltage of activation node P, provide clock signal CLK (being for example high voltage level) to N level output terminal G (N), as the sweep signal of N level circuit level S_N output.For example, when activation node P has activation voltage, driver element 1108 can, when receiving clock signal CLK, provide clock signal CLK to the N level output terminal G (N).On the other hand, when activation node P does not have activation voltage, for example, for example, when (being to have the first actuation voltage VGL) (being low-voltage level), driver element 1108 does not provide clock signal CLK to the N level output terminal G (N).
The first drop-down unit 1110 can, in order to according to the supply voltage VDD of the nodes X of deenergizing, provide the first actuation voltage VGL (being for example low-voltage level) to charge/discharge unit 1102 and activation node P, and make activation node P have the first actuation voltage VGL.For example, when the nodes X of deenergizing has supply voltage VDD, the first drop-down unit 1110 can provide the first actuation voltage VGL to charge/discharge unit 1102 and activation node P.When activation node P does not have supply voltage VDD for example, for example, when (being to have the first actuation voltage VGL or the second actuation voltage LVGL) (being low-voltage level), the first drop-down unit 1110 does not provide the first actuation voltage VGL to charge/discharge unit 1102 and activation node P again.
The second drop-down unit 1112 can, in order to according to the activation voltage of activation node P, provide the second actuation voltage LVGL to the nodes X of deenergizing.For example, when activation node P has activation voltage, the second drop-down unit 1112 can provide the second actuation voltage LVGL to the nodes X of deenergizing, and when activation node P does not have activation voltage, the second drop-down unit 1112 does not provide the second actuation voltage LVGL to the nodes X of deenergizing again.
Reset cell 1114 can be in order to reception and for example, for example, according to reset signal ENDV (being high voltage level) (being time sweep signal of one-level circuit level (i.e. N+1 level circuit level S_N+1) output), provide the first actuation voltage VGL to charge/discharge unit 1102, to make charge/discharge unit 1102 electric discharges, and make activation node P there is the first actuation voltage VGL.For example, when receiving reset signal ENDV, reset cell 1114 provides the first actuation voltage VGL to charge/discharge unit 1102, and for example, when not receiving reset signal ENDV (being low-voltage level), reset cell 1114 does not provide the first actuation voltage VGL to charge/discharge unit 1102 again.
Current sensing unit 1116 can be in order to detecting and according to the false current I1 that flows through the first drop-down unit 1110, the rub-out signal ERR_N (being for example high voltage level) of output N level circuit level S_N.For example, for example, when current sensing unit 1116 detects the false current I1 (false current I1 is greater than an electric current threshold) of the first drop-down unit 1110, the rub-out signal ERR_N of the exportable N level circuit of current sensing unit 1116 level S_N.
By above-mentioned setting, display panel 100 can be implemented.In the middle of display panel 100, activation node P in arbitrary circuit level has activation voltage, to make the nodes X of deenergizing have under the situation of the second actuation voltage LVGL, for example, if the first drop-down unit 1110 makes a mistake (be derailing switch open improperly) wherein, and making false current I1 flow through the first drop-down unit 1110 of this circuit level, the rub-out signal that current sensing unit 1116 can detect false current I1 and export this circuit level is to control circuit 120.When control circuit 120 receives rub-out signal, control circuit 120 capable of regulatings (for example reducing) the second actuation voltage LVGL.Thus, even if the first drop-down unit 1110 makes a mistake, and make false current I1 flow through the first drop-down unit 1110 of this circuit level, gate drive circuit 110 is still correctly operated.
Below will provide mu balanced circuit 100 more detailed circuit structure according to one embodiment of the invention, yet the present invention be limited with following embodiment.
In an embodiment of the present invention, charge/discharge unit 1102 for example can comprise capacitor C.Capacitor C for example can have first end and the second end, and wherein first end can be electrically connected activation node P, and the second end can be electrically connected N level output terminal G (N).
Pull-up unit 1104 for example can comprise drag switch device T5 on first.Upper drag switch device T5 for example can, in order to be electrically connected between the first end and supply voltage VDD of capacitor C, in order to first end and the supply voltage VDD of electric conduction container C, and be controlled in supply voltage VDD.
Opening beginning unit 1106 for example can comprise and open beginning derailing switch T1.Opening beginning derailing switch T1 for example can be in order to be electrically connected between the first end and initial pulse signals STV of capacitor C, in order to first end and the initial pulse signals STV of electric conduction container C, and in order to be controlled in initial pulse signals STV.
Driver element 1108 for example can comprise driving switch device T3.Driving switch device T3 for example can be in order to be electrically connected between the second end and clock signal CLK of capacitor C, in order to the second end and the clock signal CLK of electric conduction container C, and is controlled in the voltage of the first end of capacitor C.
The first drop-down unit 1110 for example can comprise the first device T2 that pulls down switch.First pulls down switch device T2 can be in order to be electrically connected between the first end and the first actuation voltage VGL of capacitor C, in order to first end and the first actuation voltage VGL of electric conduction container C, and is controlled in the voltage of the nodes X of deenergizing.
The second drop-down unit 1112 for example can comprise the second device T9 that pulls down switch.The second drop-down unit 1112 can deenergize between nodes X and the second actuation voltage LVGL in order to be electrically connected at, and in order to conducting deenergize nodes X and the second actuation voltage LVGL, and is controlled in the voltage of the first end of capacitor C.
Reset cell 1114 for example can comprise Resetting Switching device T7.Resetting Switching device T7 can be in order to be electrically connected between the first end and the first actuation voltage VGL of capacitor C, in order to first end and the first actuation voltage VGL of electric conduction container C, and in order to be controlled in reset signal ENDV.
In addition, in one embodiment, aforementioned switches device for example available membrane transistor forms.
By above-mentioned setting, activation node P in arbitrary circuit level has activation voltage, to make the nodes X of deenergizing have under the situation of the second actuation voltage LVGL, the critical voltage Vth of the device T2 skew (for example reducing) if first of the first drop-down unit 1110 pulls down switch, make critical voltage Vth be less than or equal to the second actuation voltage LVGL and deduct the first actuation voltage VGL (being Vth≤LVGL-VGL), the first device T2 that pulls down switch opens, the voltage of activation node P is drawn to fall, and this circuit level cannot correctly be exported the sweep signal of this circuit level.Now, false current I1 flows through the first drop-down unit 1110 of this circuit level.Yet, by the setting of current sensing unit 1116 and control circuit 120, the rub-out signal that detects false current I1 and export this circuit level when the current sensing unit 1116 of this circuit level is during to control circuit 120, control circuit 120 capable of regulatings (for example reducing) the second actuation voltage LVGL, the critical voltage LVGL that critical voltage Vth is greater than after adjustment deducts the first actuation voltage VGL (being Vth>LVGL-VGL), to make the first device T2 that pulls down switch close.Thus, even if the first critical voltage Vth that pulls down switch device T2 is offset, gate drive circuit 110 is still correctly operated.
In an embodiment of the present invention, the current sensing unit 1116 of N level circuit level S_N can comprise current mirror 1116a, converter 1116b and impact damper 1116c.Current mirror 1116a is electrically connected converter 1116b and impact damper 1116c.Current mirror 1116a is for example simple current mirror (basic current mirror), (cascode) current mirror that splices, Wilson current mirror or other existing habitual current mirror.Converter 1116b for example can comprise resistance R or other existing habitual current/voltage conversion element.Current mirror 1116a can flow through the false current I1 of the first drop-down unit 1110 (be for example flow through first pull down switch device T2) and corresponding to false current I1 mirror (reflect) mirror electric current I 2 in order to receive.Converter 1116b can be in order to receive mirror electric current I 2 and to provide rub-out signal ERR_N to impact damper 1116c corresponding to mirror electric current I 2.Impact damper 1116c can be in order to store and output error signal ERR_N.When noticing, on the implementation, mirror electric current I 2 also can be used as the rub-out signal that exports control circuit 120 to, and under this situation, converter 1116b and impact damper 1116c all can be omitted.The present invention is not limited with above-described embodiment.
In an embodiment of the present invention, N level circuit level S_N more comprises the 3rd drop-down unit 1118.The 3rd drop-down unit 1118, in order to according to the supply voltage of the nodes X of deenergizing, provides the second end of the first actuation voltage VGL to the N level output terminal G (N) and capacitor C, with the capacitor C that resets.For example, when activation node P has supply voltage VDD, the 3rd drop-down unit 1118 can provide the first actuation voltage VGL to the N level output terminal G (N), when activation node P does not have supply voltage VDD, the 3rd drop-down unit 1118 does not provide the first actuation voltage VGL to the N level output terminal G (N) again.
In one embodiment, the 3rd drop-down unit 1118 comprises the 3rd device T4 that pulls down switch.The 3rd device T4 that pulls down switch can be electrically connected between the second end and the first actuation voltage VGL of capacitor C, in order to the second end and the first actuation voltage VGL of electric conduction container C, and is controlled in the voltage of the nodes X of deenergizing.
In an embodiment of the present invention, N level circuit level S_N more comprises the 4th drop-down unit 1120.The 4th drop-down unit 1120, in order to according to initial pulse signals STV, provides the first actuation voltage VGL to the nodes X of deenergizing, and in order to the discharge path as the nodes X of deenergizing.For example, when receiving initial pulse signals STV, the 4th drop-down unit 1120 can provide the first actuation voltage VGL to the nodes X of deenergizing, when not receiving initial pulse signals STV, the 4th drop-down unit 1120 does not provide the first actuation voltage VGL to the nodes X of deenergizing again.
In one embodiment, the 4th drop-down unit 1120 comprises the 4th device T6 that pulls down switch.The 4th device T6 that pulls down switch can be electrically connected at and deenergizes between nodes X and the first actuation voltage VGL, in order to conducting deenergize nodes X and the first actuation voltage VGL, and in order to be controlled in initial pulse signals STV.
In an embodiment of the present invention, the pull-up unit 1104 of N level circuit level S_N, more in order to reception and according to reset signal ENDV, provides supply voltage VDD to the nodes X of deenergizing, and in order to the charge path as the nodes X of deenergizing.For example, when pull-up unit 1104 receives reset signal ENDV, pull-up unit 1104 provides supply voltage VDD to the nodes X of deenergizing, and when pull-up unit 1104 does not receive reset signal ENDV, pull-up unit 1104 does not provide supply voltage VDD to the nodes X of deenergizing again.
In one embodiment, pull-up unit 1104 more comprises drag switch device T8 on second.On second, drag switch device T8 can be electrically connected at supply voltage VDD and deenergize between nodes X, in order to conducting supply voltage VDD and the nodes X of deenergizing, and in order to be controlled in reset signal ENDV.
For making the present invention be easier to understand, below by collocation Fig. 2, the 3 explanation operations of N level circuit level S_N in one embodiment.
The state sequential chart that Fig. 3 is the N level circuit level S_N that illustrates according to one embodiment of the invention.
Under t1 state, upper drag switch device T5 opens by receiving supply voltage VDD, makes pull-up unit 1104 provide supply voltage VDD to the nodes X of deenergizing.Correspondingly, the first device T2 that pulls down switch opens, and makes the first drop-down unit 1110 provide the first actuation voltage VGL for example, to charge/discharge unit 1102 (being the first end of capacitor C), and makes activation node P have the first actuation voltage VGL.In addition, the 3rd device T4 that pulls down switch opens, and makes the 3rd drop-down unit 1118 provide the first actuation voltage VGL for example, to charge/discharge unit 1102 (being the second end of capacitor C) and N level output terminal G (N).
Under t2 state, open beginning derailing switch T1 and open by receiving initial pulse signals STV, making to open beginning unit 1106 provides initial pulse signals STV to charge/discharge unit 1102 and activation node P, to make, can have activation voltage by node P.Correspondingly, the second device T9 that pulls down switch opens, and makes the second drop-down unit 1112 provide the second actuation voltage LVGL to the nodes X of deenergizing, and correspondingly first device T2 and the 3rd device T4 that pulls down switch that pulls down switch closes.In addition, driving switch device T3 opens, and makes driver element 1108 that clock signal CLK to the N level output terminal G (N) is provided when receiving clock signal CLK.On the other hand, the 4th device T6 that pulls down switch opens by receiving initial pulse signals STV, makes the 4th drop-down unit 1120 provide the first actuation voltage VGL to the nodes X of deenergizing.
Under t3 state, open beginning derailing switch T1 and close owing to stopping receiving initial pulse signals STV, make to open beginning unit 1106 and stop providing initial pulse signals STV to charge/discharge unit 1102 and activation node P.Now, activation node P still has activation voltage, therefore driving switch device T3 and second pulls down switch, device T9 still opens.On the other hand, the 4th device T6 that pulls down switch closes owing to stopping receiving initial pulse signals STV.
Under t4 state, driver element 1108 receives and provides clock signal CLK to the N level output terminal G (N), as the sweep signal of N level circuit level S_N output.
Under t5 state, driver element 1108 stops receiving and clock signal CLK to the N level output terminal G (N) is provided, and N level circuit level S_N stops output scanning signal.
Under t6 state, Resetting Switching device T7 receives reset signal ENDV and opens, and makes reset cell 1114 provide the first actuation voltage VGL to charge/discharge unit 1102, to make, can have the first actuation voltage VGL by node P.Correspondingly, driving switch device T3 closes.In addition, the second device T9 that pulls down switch closes, and makes the second drop-down unit 1112 stop providing the second actuation voltage LVGL to the nodes X of deenergizing.Thus, the nodes X of deenergizing has supply voltage VDD, makes first device T2 and the 3rd device T4 unlatching that pulls down switch that pulls down switch, with the capacitor C that resets.
In the above-described embodiment, under t2-t5 state, if because the critical voltage Vth skew of the first derailing switch T2 causes the first derailing switch T2 to open, the exportable rub-out signal ERR_N of current sensing unit 1116 is to control circuit 120, to make control circuit 120 adjust the second actuation voltage LVGL.Thus, circuit level S_N can normal operation.
The schematic diagram that Fig. 4 is the control circuit 120 that illustrates according to one embodiment of the invention.Control circuit 120 can comprise at least one gauge tap device 122.Gauge tap device 122 for example can comprise controls electric crystal TC and control resistor RC.Gauge tap device 122 can in order to according to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., ERR_M, provide preparation the second actuation voltage LVGL_b to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M, as circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M the second actuation voltage LVGL.For example, when do not receive any rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., during ERR_M, gauge tap device 122 provide default the second actuation voltage LVGL_a to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M, ought receive again rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., during any one in ERR_M, gauge tap device 122 provide preparation the second actuation voltage LVGL_b to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M.
In an embodiment of the present invention, preparation the second actuation voltage LVGL_b is for example lower than default the second actuation voltage LVGL_a.
In addition, in an embodiment of the present invention, control circuit 120 also can according to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M rub-out signal ERR_1 ..., ERR_N-1, ERR_N, ERR_N+1 ..., ERR_M, provide respectively preparation the second actuation voltage LVGL_b to circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M, as circuit level S_1 ..., S_N-1, S_N, S_N+1 ..., S_M the second actuation voltage LVGL.For example, when control circuit 120 receives the rub-out signal ERR_1 of circuit level S_1 output, control circuit 120 provide preparation the second actuation voltage LVGL_b to circuit level S_1 as the second actuation voltage LVGL, and keep offering other circuit level S_2 ..., S_N-1, S_N, S_N+1 ..., S_M the second actuation voltage LVGL be default the second actuation voltage LVGL_a.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, so protection scope of the present invention is when being as the criterion depending on the claim person of defining.
Claims (10)
1. a display panel, is characterized in that: comprising:
Gate drive circuit, comprising:
Plurality of circuits level, wherein these circuit levels are electrically connected in series each other, and the N level circuit level in these circuit levels comprises:
Open beginning unit, in order to receive and to provide initial pulse signals to activation node, and make this activation node there is activation voltage;
Driver element, in order to receive clock signal, and in order to according to this activation voltage of this activation node, provides this clock signal to the N level output terminal;
The first drop-down unit, in order to according to the supply voltage of the node that deenergizes, provides the first actuation voltage to this activation node, and makes this activation node have this first actuation voltage;
The second drop-down unit, in order to according to this activation voltage of this activation node, provides the second actuation voltage to this node that deenergizes; And
Current sensing unit, in order to detecting and according to the false current that flows through this first drop-down unit, output error signal; And
Control circuit, in order to receive and to adjust this second actuation voltage according to this rub-out signal of this N level circuit level.
2. display panel as claimed in claim 1, is characterized in that: this current sensing unit comprises current mirror, and this current mirror is in order to receive this false current and corresponding to this false current mirror mirror electric current.
3. display panel as claimed in claim 2, is characterized in that: this current sensing unit also comprises converter, in order to receive this mirror electric current and to export this rub-out signal corresponding to this mirror electric current.
4. display panel as claimed in claim 1, it is characterized in that: this control circuit comprises at least one gauge tap device, this gauge tap device, in order to according to this rub-out signal of this N level circuit level, provides preparation the second actuation voltage to this N level circuit level this second actuation voltage as this N level circuit level.
5. display panel as claimed in claim 1, is characterized in that: this N level circuit level also comprises:
The 3rd drop-down unit, in order to this supply voltage of the node that deenergizes according to this, provides this first actuation voltage to this N level output terminal.
6. display panel as claimed in claim 1, is characterized in that: this N level circuit level also comprises:
The 4th drop-down unit, in order to receive and according to this initial pulse signals, to provide this first actuation voltage to this node that deenergizes.
7. display panel as claimed in claim 1, is characterized in that: this pull-up unit is also in order to receive and according to this reset signal, to provide this supply voltage to this node that deenergizes.
8. display panel as claimed in claim 1, is characterized in that: under the first state, this activation node has this first actuation voltage;
Under the second state, this opens beginning unit and receives and provide this initial pulse signals to this activation node, and makes this activation node have this activation voltage, makes this second drop-down unit provide this second actuation voltage to this node that deenergizes;
Under the third state, this opens beginning unit and stops providing this initial pulse signals to this activation node;
Under the 4th state, this driver element receives and provides this clock signal to this N level output terminal; And
Under the 5th state, this driver element stops receiving and provides this clock signal to this N level output terminal.
9. a display panel, is characterized in that: comprising:
Gate drive circuit, comprising:
Plurality of circuits level, wherein these circuit levels are electrically connected in series each other, and the N level circuit level in these circuit levels comprises:
Capacitor, has first end and the second end, and this of this capacitor the second end is electrically connected N level output terminal;
Drag switch device on first, in order to be electrically connected between this first end and supply voltage of this capacitor, and in order to be controlled in this supply voltage;
Open beginning derailing switch, in order to be electrically connected between this first end and initial pulse signals of this capacitor, and in order to be controlled in this initial pulse signals;
Driving switch device, in order to be electrically connected between this second end and clock signal of this capacitor, and in order to be controlled in the voltage of this first end of this capacitor;
First device that pulls down switch, is electrically connected between this first end and the first actuation voltage of this capacitor, and in order to be controlled in the voltage of the node that deenergizes;
Second device that pulls down switch, is electrically connected at this and deenergizes between node and the second actuation voltage, and in order to be controlled in the voltage of this first end of this capacitor;
Resetting Switching device, is electrically connected between this first end and the first actuation voltage of this capacitor, and in order to be controlled in reset signal;
Current mirror, is electrically connected this first device that pulls down switch, and in order to receive, flows through this first false current that pulls down switch device, and corresponding to this false current mirror mirror electric current; And
Converter, is electrically connected this current mirror, in order to reception and corresponding to this mirror electric current output error signal; And
Control circuit, in order to receive and to adjust this second actuation voltage according to this rub-out signal of this N level circuit level.
10. display panel as claimed in claim 1, it is characterized in that: this control circuit comprises at least one gauge tap device, this gauge tap device, in order to according to this rub-out signal of this N level circuit level, provides preparation the second actuation voltage to this N level circuit level this second actuation voltage as this N level circuit level.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102105391A TWI490845B (en) | 2013-02-08 | 2013-02-08 | Display panel |
| TW102105391 | 2013-02-08 |
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| Publication Number | Publication Date |
|---|---|
| CN103985339A true CN103985339A (en) | 2014-08-13 |
| CN103985339B CN103985339B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310415243.7A Active CN103985339B (en) | 2013-02-08 | 2013-09-12 | Display panel |
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| US (1) | US9177498B2 (en) |
| CN (1) | CN103985339B (en) |
| TW (1) | TWI490845B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI564863B (en) * | 2016-02-05 | 2017-01-01 | 聯詠科技股份有限公司 | Gate driver of display panel and operation method thereof |
| WO2017054403A1 (en) * | 2015-09-30 | 2017-04-06 | 京东方科技集团股份有限公司 | Gate drive element circuit, gate drive circuit, display apparatus and drive method |
| WO2017075843A1 (en) * | 2015-11-06 | 2017-05-11 | 深圳市华星光电技术有限公司 | Scan driving device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223713B (en) * | 2015-09-09 | 2018-05-25 | 深圳市华星光电技术有限公司 | Protect circuit and the liquid crystal display with the protection circuit |
| CN105609137B (en) * | 2016-01-05 | 2019-06-07 | 京东方科技集团股份有限公司 | Shift register, grid line integrated drive electronics, array substrate and display device |
| KR20220095592A (en) * | 2020-12-30 | 2022-07-07 | 엘지디스플레이 주식회사 | Gate driving circuit, display device, and gate driving emthod |
| CN113035258A (en) * | 2021-03-09 | 2021-06-25 | 京东方科技集团股份有限公司 | Shift register, grid drive circuit and display panel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299124A (en) * | 1999-12-09 | 2001-06-13 | 精工爱普生株式会社 | Photoelectric device, clock signal regulation method and circuit therefor, and prodn. method therefor |
| CN1145920C (en) * | 1995-03-06 | 2004-04-14 | 汤姆森多媒体公司 | Liquid crystal display driver with threshold voltage drift compensation |
| US20060269038A1 (en) * | 2005-05-26 | 2006-11-30 | Lg.Philips Lcd Co., Ltd. | Shift register |
| CN101515431A (en) * | 2008-02-22 | 2009-08-26 | 财团法人工业技术研究院 | Translation register for grid driver |
| CN102054455A (en) * | 2010-12-14 | 2011-05-11 | 友达光电股份有限公司 | Grid driving circuit with automatic linear temperature adjusting function |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7310402B2 (en) | 2005-10-18 | 2007-12-18 | Au Optronics Corporation | Gate line drivers for active matrix displays |
| JP4816077B2 (en) | 2005-12-28 | 2011-11-16 | 日本電気株式会社 | Level shift circuit and driver circuit using the same |
| TW200739504A (en) * | 2006-04-07 | 2007-10-16 | Himax Tech Ltd | Source driver for display and method of driving thereof |
| JP4912186B2 (en) | 2007-03-05 | 2012-04-11 | 三菱電機株式会社 | Shift register circuit and image display apparatus including the same |
| TW200915290A (en) | 2007-07-24 | 2009-04-01 | Koninkl Philips Electronics Nv | A shift register circuit |
| JP5017673B2 (en) * | 2007-09-12 | 2012-09-05 | 双葉電子工業株式会社 | Display panel drive circuit and display device |
| JP5634005B2 (en) * | 2007-11-02 | 2014-12-03 | 株式会社ジャパンディスプレイ | Display device, display control method, and electronic device |
| US7999530B2 (en) | 2008-03-21 | 2011-08-16 | Intersil Americas Inc. | Device under test power supply |
| TWI391891B (en) * | 2008-06-06 | 2013-04-01 | Holtek Semiconductor Inc | Display panel driver |
| TWI402814B (en) | 2009-01-16 | 2013-07-21 | Chunghwa Picture Tubes Ltd | Gate driving circuit capable of suppressing threshold voltage drift |
| JP5467455B2 (en) * | 2009-10-07 | 2014-04-09 | Ｎｌｔテクノロジー株式会社 | Shift register circuit, scanning line driving circuit, and display device |
| JP5356208B2 (en) | 2009-12-25 | 2013-12-04 | 株式会社ジャパンディスプレイ | Gate signal line driving circuit and display device |
| WO2011092924A1 (en) * | 2010-01-29 | 2011-08-04 | シャープ株式会社 | Shift register and display device |
| CN102467891B (en) | 2010-10-29 | 2013-10-09 | 京东方科技集团股份有限公司 | Shift register unit, gate driving device and liquid crystal display |
| KR101966381B1 (en) * | 2012-09-28 | 2019-04-05 | 엘지디스플레이 주식회사 | Shift register and flat panel display device thereof |
-
2013
- 2013-02-08 TW TW102105391A patent/TWI490845B/en active
- 2013-09-12 CN CN201310415243.7A patent/CN103985339B/en active Active
- 2013-11-11 US US14/076,282 patent/US9177498B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145920C (en) * | 1995-03-06 | 2004-04-14 | 汤姆森多媒体公司 | Liquid crystal display driver with threshold voltage drift compensation |
| CN1299124A (en) * | 1999-12-09 | 2001-06-13 | 精工爱普生株式会社 | Photoelectric device, clock signal regulation method and circuit therefor, and prodn. method therefor |
| US20060269038A1 (en) * | 2005-05-26 | 2006-11-30 | Lg.Philips Lcd Co., Ltd. | Shift register |
| CN101515431A (en) * | 2008-02-22 | 2009-08-26 | 财团法人工业技术研究院 | Translation register for grid driver |
| CN102054455A (en) * | 2010-12-14 | 2011-05-11 | 友达光电股份有限公司 | Grid driving circuit with automatic linear temperature adjusting function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054403A1 (en) * | 2015-09-30 | 2017-04-06 | 京东方科技集团股份有限公司 | Gate drive element circuit, gate drive circuit, display apparatus and drive method |
| US10217427B2 (en) | 2015-09-30 | 2019-02-26 | Boe Technology Group Co., Ltd. | Gate drive unit circuit, gate drive circuit, display device and driving method |
| WO2017075843A1 (en) * | 2015-11-06 | 2017-05-11 | 深圳市华星光电技术有限公司 | Scan driving device |
| TWI564863B (en) * | 2016-02-05 | 2017-01-01 | 聯詠科技股份有限公司 | Gate driver of display panel and operation method thereof |
| US9875711B2 (en) | 2016-02-05 | 2018-01-23 | Novatek Microelectronics Corp. | Gate driver of display panel and operation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US9177498B2 (en) | 2015-11-03 |
| US20140225882A1 (en) | 2014-08-14 |
| CN103985339B (en) | 2017-03-22 |
| TW201432660A (en) | 2014-08-16 |
| TWI490845B (en) | 2015-07-01 |
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